The famous socialist Eugene Debs ran for president in 1920 while sitting in a prison cell. He got about 3% of the vote. Perhaps we'll see the same sort of thing in 2016, this time with Hillary. Only difference: Hillary might actually win.
In the 2012 closed WV Democrat Presidential primary election a convicted and imprisoned felon, Keith Judd, garnered more than 42% of the vote while running against Zer0 from his jail cell.